0.2-beta.20

• header field names are case-insensitive
• add more comprehensive routing tests

0.2-beta.19

some refactoring

0.2-beta.18

merge the two exception packages

0.2-beta.17

• Migrated to Kotlin 1.4.32
• Migrated to Ktor 1.5.3
• Migrated to Kotlin Gradle from Groovy Gradle
• new syntax for error declarations as part of the route definition